150k users supported by one man holy shit! This is obviously a B2C freemium app, right? Would love to see a writeup on how you handled the devops/deployment for this. Load balancers, serverless, or just one baremetal server?
Thanks :) - yes 90% of users are using the free version. It's a desktop app you install on servers. The API elements it does have are a combination of cloudflare workers, a windows server (for customer portal), linux for community discourse. Peak API use so far is 350M requests per month (was about $46 on cloudflare) but have managed to curtail that a bit. https://certifytheweb.com